21079072

素因数分解:

$2^5\times 7^1\times {\mathrm{139}}^1\times {\mathrm{677}}^1$

素因数の和:833

約数の個数: 48

約数和(自身を含む): 47839680

約数和(自身を除く): 26760608

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 139, 224, 278, 556, 677, 973, 1112, 1354, 1946, 2224, 2708, 3892, 4448, 4739, 5416, 7784, 9478, 10832, 15568, 18956, 21664, 31136, 37912, 75824, 94103, 151648, 188206, 376412, 658721, 752824, 1317442, 1505648, 2634884, 3011296, 5269768, 10539536, 21079072]

約数ペア:

[(1, 21079072), (2, 10539536), (4, 5269768), (7, 3011296), (8, 2634884), (14, 1505648), (16, 1317442), (28, 752824), (32, 658721), (56, 376412), (112, 188206), (139, 151648), (224, 94103), (278, 75824), (556, 37912), (677, 31136), (973, 21664), (1112, 18956), (1354, 15568), (1946, 10832), (2224, 9478), (2708, 7784), (3892, 5416), (4448, 4739)]